Shield-bug
Guides
Acantholomidea porosa
Acantholomidea porosa is a shield bug species in the family Scutelleridae, first described by Germar in 1839 as Pachycoris porosus. The species has undergone taxonomic reclassification, currently placed in the genus Acantholomidea though historically treated under Camirus. It is a true bug (Hemiptera) distributed across the Americas with records from North, Middle, and South America.
Aelia
shield bug
Aelia is a genus of shield bugs (family Pentatomidae) in the tribe Aelini. These true bugs (Hemiptera) are characterized by their shield-shaped bodies. The genus is well-documented with over 11,000 observations on iNaturalist, indicating widespread recognition among naturalists. Aelia species are associated with grassland and agricultural habitats.
Agonoscelis
Agonoscelis is a genus of shield bugs (Pentatomidae) in the monotypic tribe Agonoscelidini. The genus contains approximately 19–22 species native to the Afrotropics and Australia, with one species, A. puberula, established in the New World. Several species are agricultural pests of sorghum, sunflower, and other crops. Adults range from 8 to 12 mm in length and possess five nymphal stages.
Bagrada hilaris
Bagrada bug, Painted bug
Bagrada hilaris is an invasive shield bug native to Africa and Asia that has become a significant agricultural pest in North America, South America, and Europe. First detected in the Western Hemisphere in Los Angeles in 2008, it has since spread throughout California, Arizona, and other southwestern states, as well as establishing in Chile and Italy. The species is a major pest of Brassicaceae crops including cabbage, kale, broccoli, and cauliflower, causing damage through sap-sucking by both adults and nymphs. Its rapid spread and broad host range have made it a priority for integrated pest management research.
Banasa
Banasa stink bugs
Banasa is a genus of phytophagous stink bugs in the family Pentatomidae, tribe Pentatomini. These plant-feeding true bugs are primarily associated with woody plants, particularly conifers and broadleaf trees. The genus contains at least eleven species in North America, with additional species described from South America including the recently described B. maculata from the Brazilian Atlantic Forest. Species identification typically requires microscopic examination of morphological characters.
Cappaeini
Cappaeini is a tribe within the subfamily Pentatominae of shield bugs (family Pentatomidae). As a tribe-level taxon, it groups together related genera of stink bugs sharing derived morphological characteristics. The tribe is part of the highly diverse Pentatominae, which contains the majority of species in the Pentatomidae family. Members of Cappaeini are phytophagous, feeding on plant material.
Chinavia marginata
Margined Stink Bug
Chinavia marginata is a species of shield bug (family Pentatomidae) native to Florida, Central America, and the Caribbean. The species belongs to a genus of stink bugs commonly known as green stink bugs, characterized by their green coloration and agricultural pest status. Like other Chinavia species, it possesses piercing-sucking mouthparts used for feeding on plant tissues. The species has undergone taxonomic revision, previously classified under Acrosternum and Pentatoma.
Chlorochroa
shield bugs, stink bugs
Chlorochroa is a genus of shield bugs (stink bugs) in the family Pentatomidae, containing approximately 19-20 described species distributed across Europe and North America. Adults range from 8-19 mm in length and are broadly oval in shape. The genus is notable for its variable coloration, with adults typically green to brownish or almost black, often with a pale red, yellow, or whitish marginal band around the body. Several species are significant agricultural pests, feeding on a wide range of crops including apple, cotton, grape, alfalfa, and various fruits. Species within the genus are morphologically similar and are distinguished primarily by male genitalia structure and geographic distribution.
Chlorochroa kanei
Chlorochroa kanei is a species of stink bug described by Buxton & Thomas in 1983. It belongs to the family Pentatomidae, a large group of true bugs commonly known as shield bugs or stink bugs due to their characteristic shape and defensive secretions. The species is known to occur in North America, though specific details about its biology, ecology, and distribution within that range remain poorly documented in the available literature.
Chlorochroa sayi
Say's Stink Bug
Chlorochroa sayi, commonly known as Say's stink bug, is a species of stink bug in the family Pentatomidae. It is found in North America. The species belongs to the genus Chlorochroa, which includes several green stink bug species. Like other members of its family, it possesses the characteristic shield-shaped body typical of stink bugs.
Cyphostethus tristriatus
Juniper Shield Bug
Cyphostethus tristriatus, commonly known as the juniper shield bug, is a large shield bug in the family Acanthosomatidae. Native to the Palearctic region, it has been introduced and established in North America. The species exhibits intraspecific melanism, with a highly melanic morph documented in addition to the typical green coloration. It is associated with juniper as a host plant.
Cyptocephala elegans
Elegant Coastal Stink Bug
Cyptocephala elegans is a species of shield bug in the family Pentatomidae, tribe Pentatomini. It is known from North America. The species is commonly referred to as the Elegant Coastal Stink Bug. Information on its biology and ecology remains limited.
Elasmostethus
Birch shieldbug
Elasmostethus is a genus of shield bugs in the family Acanthosomatidae, comprising approximately 15 described species distributed across the Holarctic region. The genus is notable for exhibiting asocial behavior—specifically, the absence of maternal care of eggs—contrasting with subsocial species found elsewhere in the family. Species within this genus show significant interspecific variation in life history traits including egg size, developmental periods, and female body size, though clutch size remains relatively consistent across species.
Elasmostethus cruciatus
red-cross shield bug, redcrossed stink bug, salmonberry bug
Elasmostethus cruciatus is a shield bug in the family Acanthosomatidae, commonly known as the red-cross shield bug or salmonberry bug. It is native to North America and recognized by the distinctive red cross pattern on its dorsal surface. The species is associated with salmonberry and other Rubus plants.
Elasmostethus interstinctus
Birch Shield Bug
Elasmostethus interstinctus, commonly known as the birch shield bug, is a shield bug in the family Acanthosomatidae with a Holarctic distribution across Europe, Northern Asia, and North America. Adults measure 8–11.5 mm and display distinctive bright yellow-green and red coloration. The species is univoltine, with adults overwintering in leaf litter and emerging in spring to reproduce on birch and other host plants.
Elasmucha
Parent shieldbugs
Elasmucha is a genus of shield bugs in the family Acanthosomatidae, commonly known as parent shieldbugs. Species in this genus are notable for exhibiting subsocial behavior, specifically extended maternal care of eggs and early nymphal stages. Females guard egg masses and remain with offspring through early instars, actively defending against predators and parasitoids. The genus includes arboreal species associated with specific host trees, with documented seasonal host plant switching in some species.
Elasmucha lateralis
Edge-striped Shield Bug
Elasmucha lateralis is a shield bug in the family Acanthosomatidae, commonly known as the Edge-striped Shield Bug. It is native to North America, with distribution extending into Middle America. The species belongs to a genus noted for maternal care behaviors, though specific documentation of such behavior in E. lateralis is limited.
Eurygaster
sunn pest, sunn bug, tortoise shieldbug
Eurygaster is a genus of shield bugs in the family Scutelleridae, distributed across Eurasia with some species in North America. The genus includes several economically significant agricultural pests, particularly E. integriceps and E. testudinaria, known as sunn pests that damage cereal crops. Species identification within the genus is challenging due to morphological similarities among closely related taxa. The genus comprises at least 17 extant species plus one fossil species, with six species recorded from Russia.
Eurygastrinae
Eurygastrinae is a subfamily of shield-backed bugs within the family Scutelleridae. Members are characterized by a greatly enlarged scutellum that forms a continuous shield covering the abdomen and wings. The subfamily is predominantly distributed in the Palearctic region, with notable genera including Eurygaster. Many species are associated with grasses and cereal crops, with some considered agricultural pests.
Euschistus ictericus
Shield bug
Euschistus ictericus is a North American shield bug (Pentatomidae) measuring 10.5–12 mm in length. It is distinguished from other brown stink bugs by the absence of black spots on the ventral mid-abdomen and the presence of black rings around abdominal spiracles. The species inhabits damp environments and has been documented on diverse host plants including sedges, irises, water lilies, willows, and various legumes. It is not considered an economically important agricultural pest.
Euschistus variolarius
one-spotted stink bug, onespotted stink bug
Euschistus variolarius, commonly known as the one-spotted stink bug, is a Nearctic species of shield bug in the family Pentatomidae. It is a phytophagous insect that feeds primarily on seeds and developing fruits of various plants, including legumes, grasses, and agricultural crops such as soybean and alfalfa. The species produces one generation per year in northern parts of its range, with adults overwintering in ground debris and emerging in spring to reproduce. While historically considered a minor pest, it has become increasingly recognized as an emerging pest in Midwestern soybean and corn production.
Fokkeria producta
Fokkeria producta is a shield-backed bug in the family Scutelleridae, described by Van Duzee in 1904. This species belongs to a family commonly known as shield bugs or jewel bugs, recognized for their enlarged scutellum that covers most of the abdomen and wings. The genus Fokkeria is part of the diverse North American scutellerid fauna.
Galgupha atra
ebony bug
Galgupha atra is a species of ebony bug in the family Thyreocoridae, a group of true bugs within the order Hemiptera. It is distributed across Central America and North America. Members of this family are typically small, dark-colored bugs with a distinctive shield-like body shape.
Galgupha nitiduloides
ebony bug
Galgupha nitiduloides is a species of ebony bug in the family Thyreocoridae, a group of true bugs characterized by their compact, often shiny black bodies. The species occurs across Central America and North America, with three recognized subspecies showing geographic variation. As a member of the shield bug complex, it possesses the typical pentatomoid body plan but with the reduced scutellum and distinctive form characteristic of ebony bugs. Documentation of this species remains limited, with few observational records available.
Halyini
Halyini is a tribe of stink bugs within the family Pentatomidae. The tribe has historically served as a provisional grouping for numerous genera, many of which have subsequently been reassigned to other tribes. Current taxonomy recognizes multiple genera within Halyini, including Halys and Neohalys, though the precise generic composition remains subject to revision. The tribe is characterized by morphological features of the male and female terminalia, which are important for species-level identification.
Halyomorpha
Halyomorpha is a genus of shield bugs (family Pentatomidae) in the subfamily Pentatominae and tribe Cappaeini, erected by G. Mayr in 1864. The genus likely originated in Asia. Halyomorpha halys, the brown marmorated stink bug, is the most well-known species and has become a globally significant invasive pest. The genus is characterized by shield-shaped bodies typical of pentatomids.
Halyomorpha halys
Brown Marmorated Stink Bug, BMSB
Halyomorpha halys is an invasive shield bug native to East Asia that has become a major agricultural and nuisance pest across North America, Europe, and beyond. First detected in Pennsylvania in 1998, it has spread to at least 47 U.S. states, 4 Canadian provinces, and numerous European countries. The species is highly polyphagous, feeding on over 300 plant species across 49 families, with particular preference for Rosaceae. Its invasion success is facilitated by high mobility, broad host range, and absence of natural enemies in invaded ranges. Natural control is emerging through adventive populations of the egg parasitoid Trissolcus japonicus and other native predators and pathogens.
Kermana imbuta
Purple-washed Stink Bug
Kermana imbuta is a species of stink bug in the family Pentatomidae, known by the common name Purple-washed Stink Bug. It is distributed across Middle America and North America. The species was described by Walker in 1867. As a member of Pentatomidae, it possesses the characteristic shield-shaped body and scent glands typical of this family.
Leptoglossus
leaf-footed bugs
Leptoglossus is a genus of true bugs in the leaf-footed bug family Coreidae, tribe Anisoscelini. Species are characterized by leaflike dilations of the hind tibia, a diagnostic trait of the genus. The genus is distributed throughout the Americas, with some introduced populations in Europe and Asia. Several species are economically significant agricultural pests, notably L. occidentalis, which has become invasive in multiple continents.
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nchanmoss-bugarchaeorrhynchanfulgoromorphancicadomorphanmembracoidtreehopperleafhopperplanthopperpsyllidjumping-plant-lousewhiteflyaleyrodidscale-insectcoccoidmealybugaphidadelgidphylloxeransternorrhynchanthysanopteranthripspsocopteranbarklousebooklousephthirapteranlousesucking-lousechewing-lousemallophagananoplurandermapteranearwigblattodeancockroachtermiteisopteranmantodeanmantidphasmidstick-insectleaf-insectorthopterangrasshopperlocustkatydidcricketmole-cricketpygmy-mole-cricketcamel-cricketcave-cricketwetaensiferancaeliferangryllotalpidmyrmecophilidtettigoniidgryllidacrididpamphagidpneumoridlentulidtristirideumastacidproscopiidtridactylidtetrigidgrouse-locustpygmy-grasshopperplecopteranstoneflyembiopteranwebspinnerzorapteranangel-insectdictyopteranMurgantia
Murgantia is a genus of shield bugs (family Pentatomidae, tribe Pentatomini) comprising approximately six described species. The genus is best known for Murgantia histrionica, commonly called the harlequin bug, a significant agricultural pest of cruciferous crops in North America. Species in this genus exhibit bright aposematic coloration—typically combinations of orange, black, and yellow—and possess chemical defense mechanisms derived from host plant compounds. Research on M. histrionica has established it as a laboratory model for studying developmental plasticity, thermal melanism, and gene expression patterns in hemimetabolous insects.
Odmalea
Odmalea is a genus of stink bugs in the family Pentatomidae, established by Bergroth in 1915. The genus contains at least three described species. Members are true bugs in the order Hemiptera, characterized by piercing-sucking mouthparts and shield-shaped bodies typical of the family.
Orsilochides scurrilis
Orsilochides scurrilis
A shield-backed bug in the family Scutelleridae, characterized by the greatly enlarged scutellum that covers most of the abdomen and wings. This species exhibits the typical scutellerid body form with a rounded, shield-like appearance. The genus Orsilochides is primarily Neotropical in distribution.
Orsilochides stictica
Orsilochides stictica is a species of shield-backed bug in the family Scutelleridae, a group of true bugs characterized by a greatly enlarged scutellum that covers most of the abdomen and wings. The species is moderately well-documented with over 780 observations, primarily in North America. Members of this genus are often associated with host plants in the family Fabaceae. The species exhibits the typical shield bug body plan with metallic or patterned coloration common in the family.
Pentatominae
shield bugs, stink bugs
Pentatominae is the largest subfamily within Pentatomidae, comprising approximately 4,937 species in 938 genera. Members are commonly known as shield bugs or stink bugs due to their characteristic body shape and defensive secretions. The subfamily includes numerous agricultural pests and several invasive species that have become household pests in introduced ranges. Higher systematics of the group have been revised by Rider et al.
Piezodorus lituratus
gorse shield bug
Piezodorus lituratus, commonly known as the gorse shield bug, is a shield bug species in the family Pentatomidae. Adults reach 10–13 mm in length and exhibit seasonal color polymorphism: bright green in spring after emergence from hibernation, developing purplish-red markings on the pronotum and corium in late summer, and becoming paler before hibernation. The species is associated with leguminous host plants, particularly broom and dyer's greenweed, and is found across Europe, Africa, Northern Asia, and North America.
Tepa
Tepa is a genus of shield bugs (family Pentatomidae) in the tribe Pentatomini. The genus comprises approximately six described species. Members of this genus are true bugs in the order Hemiptera, characterized by the typical shield-shaped body form common to stink bugs. The genus was established by Rolston and McDonald in 1984.